Mediators want to help parties achieve a durable solution. But a good mediator does not want to push parties to settle whatever the costs. A durable solution is one, which both parties are able to live with which provides them with enough of what they need to make it worthwhile.
However, there is no arbiter assessing mediations to determine if the settlement agreement is fair. With the freedom to take charge of your dispute comes the responsibility to make a wise decision for yourself.